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Reports until 11:20, Wednesday 13 May 2026
H1 SPI
jeffrey.kissel@LIGO.ORG - posted 11:20, Wednesday 13 May 2026 - last comment - 11:20, Wednesday 13 May 2026(90228)
SPI Pathfinder ISIK Transceiver In-vac PD cable routing vs. PD / Cable Serial Numbers
J. Kissel 

SPI Wiring Diagram: D2400111-v6
In-chamber in-vac cable routing: In-vac Cable Routing Plan from G2401479-v3

I never aLOGged our choice of cable-table bracket floor assignment down when we originally assembled and signal-checked the D2400107-v4, so during disassembly in prep for upgrade to D2400107-v5 (LHO:90225) I took the time to write down the cable routing, cable serial number assignment, and cable table bracket (CBT) floor assignment:

Path       PD Name         PD SN          Duopus      D9 CBT Name / Floor     Quadrapus    D25 CBT Name / Floor 
                      |----------D2600001--------|  
                      D1600083 Type 2     D2400341    D2000492                D2400343     D2000492 
    
                                                                              S2500512
IFO REF    A/B        S2401096/S2401095   S2500516    CBT 2 / 2nd of 2        cable E      CBT 1 / 1st of 2   
IFO MEAS   A/B        S2401097/S2401098   S2500514    CBT 2 / 1st of 2        cable D      CBT 1 / 1st of 2
FBR PWR    REF/MEAS   S2401094/S2401093   S2500515    CBT 3 / 2nd of 2        cable C      CBT 1 / 1st of 2

                           PD SN          Monopus 
                      |----------D2600002--------|
                      D1600083 Type 3     D2400340

OL ISIK    QPD B      S2401091            S2500518    CBT 3 / 1st of 2        cable B      CBT 1 / 1st of 2

First and Second of the attached pictures are of the CBT 2 cable routing. I needed two pictures because the D9 end's two-part backshell of IFO REF cable was assembled with its serial number stamped on one side of one part, and the other side of the other part. C'est la vie.

Third picture is of CBT 3's cable routing.

The 2x D9 CBT assemblies (since the "type" we've assembled is not explicitly drawn in D2000492) are 
    - QTY 1x D2000519 baseplate
    - QTY 1x D2000520 "Type 2" two-floor uprights, with
    - QTY 2x D2200443 D9 adapters,
    - QTY 2x 1/4"-20 x 0.625" L captive SHCS (95966A512) for securing to the HAM table (rather than the 3/8"-16 captive SHCS that are used to secure to the BSC tables)
    - QTY 2x #6-32 x 0.375"L SHCS (92200A146) for securing the baseplate to the upright
    - QTY 2x per D9 adapter (4x total) #4-40 x 0.224"L ("2D"; 1185-04EN224) nitronic 60 helicoils for each of the upright holes
    - QTY 2x per D9 adapter (4x total) #4-40 x 0.5"L captive SHCS (95966A140) for securing the adapters to the upright

For the single D25 2-floor CBT that holds the D25 ends of the PD and picomotor quadrapuses, we used the standard D2000492 Type 2 configuration.
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jeffrey.kissel@LIGO.ORG - 11:02, Wednesday 13 May 2026 (90229)
Pictures of the D1600083 Generic PD enclosure ends of the D2600001 Assemblies

In order of their appearance in D2400111-v6 page 3:
    - IFO_REFA
    - IFO_REFB
    - IFO_MEASA
    - IFO_MEASB
    - FBRPWRIN_REF
    - FBRPWRIN_MEAS
    - QPD_B
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